Granted Patent
Utility
US 5,720,350 · App. 08/642,822
Method for recovering oil from a gravity drainage formation
Inventor:
Patrick L. McGuire
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: May 3, 1996
Inventor
Patrick L. McGuire
Assignee (at issue)
Atlantic Richfield Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.